audio: add G711 audio encoding support

G711 PCM is a commonly used waveform speech codec.
Add native audio drivers for both G711 mlaw and G711
alaw encoding formats.

CRs-Fixed: 1094107
Change-Id: Ia187948fab9840447b1f5b1ede4e9a1ece0b85c5
Signed-off-by: Preetam Singh Ranawat <apranawat@codeaurora.org>
Signed-off-by: Surendar karka <sukark@codeaurora.org>

3 files changed, 767 insertions, 1 deletions

diff --git a/drivers/misc/qcom/qdsp6v2/Makefile b/drivers/misc/qcom/qdsp6v2/Makefile
index 7006ff4a272f..6a673220f462 100644
--- a/drivers/misc/qcom/qdsp6v2/Makefile
+++ b/drivers/misc/qcom/qdsp6v2/Makefile
@@ -1,4 +1,4 @@
-obj-$(CONFIG_MSM_QDSP6V2_CODECS) += aac_in.o qcelp_in.o evrc_in.o amrnb_in.o audio_utils.o
+obj-$(CONFIG_MSM_QDSP6V2_CODECS) += aac_in.o qcelp_in.o evrc_in.o amrnb_in.o g711mlaw_in.o g711alaw_in.o audio_utils.o
 obj-$(CONFIG_MSM_QDSP6V2_CODECS) += audio_wma.o audio_wmapro.o audio_aac.o audio_multi_aac.o audio_alac.o audio_ape.o audio_utils_aio.o
 obj-$(CONFIG_MSM_QDSP6V2_CODECS) += q6audio_v2.o q6audio_v2_aio.o
 obj-$(CONFIG_MSM_QDSP6V2_CODECS)  += audio_mp3.o audio_amrnb.o audio_amrwb.o audio_amrwbplus.o audio_evrc.o audio_qcelp.o amrwb_in.o audio_hwacc_effects.o
diff --git a/drivers/misc/qcom/qdsp6v2/g711alaw_in.c b/drivers/misc/qcom/qdsp6v2/g711alaw_in.c
new file mode 100644
index 000000000000..ac720b53ff5b
--- /dev/null
+++ b/drivers/misc/qcom/qdsp6v2/g711alaw_in.c
@@ -0,0 +1,382 @@
+/* Copyright (c) 2010-2016, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+*/
+
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/miscdevice.h>
+#include <linux/uaccess.h>
+#include <linux/sched.h>
+#include <linux/wait.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <linux/msm_audio_g711.h>
+#include <linux/atomic.h>
+#include <linux/compat.h>
+#include <asm/ioctls.h>
+#include "audio_utils.h"
+
+/* Buffer with meta*/
+#define PCM_BUF_SIZE		(4096 + sizeof(struct meta_in))
+
+/* Maximum 10 frames in buffer with meta */
+#define FRAME_SIZE		(1 + ((320+sizeof(struct meta_out_dsp)) * 10))
+static long g711_in_ioctl_shared(struct file *file,
+				unsigned int cmd, unsigned long arg)
+{
+	struct q6audio_in  *audio = file->private_data;
+	int rc = 0;
+	int cnt = 0;
+
+	switch (cmd) {
+	case AUDIO_START: {
+		struct msm_audio_g711_enc_config *enc_cfg;
+
+		enc_cfg = (struct msm_audio_g711_enc_config *)audio->enc_cfg;
+		pr_debug("%s:session id %d: default buf alloc[%d]\n", __func__,
+				audio->ac->session, audio->buf_alloc);
+		if (audio->enabled == 1) {
+			rc = 0;
+			break;
+		}
+		rc = audio_in_buf_alloc(audio);
+		if (rc < 0) {
+			pr_err("%s:session id %d: buffer allocation failed rc=%d\n",
+				__func__, audio->ac->session, rc);
+			break;
+		}
+		pr_debug("%s: sample rate %d", __func__, enc_cfg->sample_rate);
+		rc = q6asm_enc_cfg_blk_g711(audio->ac,
+			audio->buf_cfg.frames_per_buf,
+			enc_cfg->sample_rate);
+
+		if (rc < 0) {
+			pr_err("%s:session id %d: cmd g711 media format block failed rc=%d\n",
+					__func__, audio->ac->session, rc);
+			break;
+		}
+		if (audio->feedback == NON_TUNNEL_MODE) {
+			rc = q6asm_media_format_block_pcm(audio->ac,
+				audio->pcm_cfg.sample_rate,
+				audio->pcm_cfg.channel_count);
+
+			if (rc < 0) {
+				pr_err("%s:session id %d: media format block failed rc=%d\n",
+					__func__, audio->ac->session, rc);
+				break;
+			}
+		}
+		pr_debug("%s:session id %d: AUDIO_START enable[%d]\n", __func__,
+				audio->ac->session, audio->enabled);
+		rc = audio_in_enable(audio);
+		if (!rc) {
+			audio->enabled = 1;
+		} else {
+			audio->enabled = 0;
+			pr_err("%s:session id %d: Audio Start procedure failed rc=%d\n",
+					__func__, audio->ac->session, rc);
+			break;
+		}
+		while (cnt++ < audio->str_cfg.buffer_count)
+			q6asm_read(audio->ac); /* Push buffer to DSP */
+		rc = 0;
+		pr_debug("%s:session id %d: AUDIO_START success enable[%d]\n",
+				__func__, audio->ac->session, audio->enabled);
+		break;
+	}
+	case AUDIO_STOP: {
+		pr_debug("%s:session id %d: AUDIO_STOP\n", __func__,
+				audio->ac->session);
+		rc = audio_in_disable(audio);
+		if (rc  < 0) {
+			pr_err("%s:session id %d: Audio Stop procedure failed rc=%d\n",
+				__func__, audio->ac->session,
+					rc);
+			break;
+		}
+		break;
+	}
+	case AUDIO_SET_G711_ENC_CONFIG: {
+		struct msm_audio_g711_enc_config *cfg;
+		struct msm_audio_g711_enc_config *enc_cfg;
+
+		enc_cfg = (struct msm_audio_g711_enc_config *)audio->enc_cfg;
+
+		cfg = (struct msm_audio_g711_enc_config *)arg;
+		if (cfg == NULL) {
+			pr_err("%s: NULL config pointer\n", __func__);
+			rc = -EINVAL;
+			break;
+		}
+		if (cfg->sample_rate != 8000 &&
+			 cfg->sample_rate != 16000) {
+			pr_err("%s:session id %d: invalid sample rate\n",
+					__func__, audio->ac->session);
+			rc = -EINVAL;
+			break;
+		}
+		enc_cfg->sample_rate = cfg->sample_rate;
+		pr_debug("%s:session id %d: sample_rate= 0x%x",
+			__func__,
+			audio->ac->session, enc_cfg->sample_rate);
+		break;
+	}
+	default:
+		pr_err("%s: Unknown ioctl cmd = %d", __func__, cmd);
+		rc = -ENOIOCTLCMD;
+	}
+	return rc;
+}
+
+static long g711_in_ioctl(struct file *file,
+				unsigned int cmd, unsigned long arg)
+{
+	struct q6audio_in  *audio = file->private_data;
+	int rc = 0;
+
+	switch (cmd) {
+	case AUDIO_START:
+	case AUDIO_STOP: {
+		rc = g711_in_ioctl_shared(file, cmd, arg);
+		break;
+	}
+	case AUDIO_GET_G711_ENC_CONFIG: {
+		if (copy_to_user((void *)arg, audio->enc_cfg,
+			sizeof(struct msm_audio_g711_enc_config))) {
+			pr_err(
+				"%s: copy_to_user for AUDIO_GET_g711_ENC_CONFIG failed",
+				__func__);
+			rc = -EFAULT;
+		}
+		break;
+	}
+	case AUDIO_SET_G711_ENC_CONFIG: {
+		struct msm_audio_g711_enc_config cfg;
+
+		if (copy_from_user(&cfg, (void *) arg,
+				sizeof(cfg))) {
+			pr_err(
+				"%s: copy_from_user for AUDIO_GET_G711_ENC_CONFIG failed",
+				__func__);
+			rc = -EFAULT;
+			break;
+		}
+		rc = g711_in_ioctl_shared(file, cmd, (unsigned long)&cfg);
+		if (rc)
+			pr_err("%s:AUDIO_GET_G711_ENC_CONFIG failed. Rc= %d\n",
+				__func__, rc);
+		break;
+	}
+	default:
+		pr_err("%s: Unknown ioctl cmd = %d", __func__, cmd);
+		rc = -ENOIOCTLCMD;
+	}
+	return rc;
+}
+
+#ifdef CONFIG_COMPAT
+struct msm_audio_g711_enc_config32 {
+	uint32_t sample_rate;
+};
+
+enum {
+	AUDIO_SET_G711_ENC_CONFIG_32 = _IOW(AUDIO_IOCTL_MAGIC,
+	  (AUDIO_MAX_COMMON_IOCTL_NUM+0), struct msm_audio_g711_enc_config32),
+	AUDIO_GET_G711_ENC_CONFIG_32 = _IOR(AUDIO_IOCTL_MAGIC,
+	  (AUDIO_MAX_COMMON_IOCTL_NUM+1), struct msm_audio_g711_enc_config32)
+};
+
+static long g711_in_compat_ioctl(struct file *file,
+				unsigned int cmd, unsigned long arg)
+{
+	struct q6audio_in  *audio = file->private_data;
+	int rc = 0;
+
+	switch (cmd) {
+	case AUDIO_START:
+	case AUDIO_STOP: {
+		rc = g711_in_ioctl_shared(file, cmd, arg);
+		break;
+	}
+	case AUDIO_GET_G711_ENC_CONFIG_32: {
+		struct msm_audio_g711_enc_config32 cfg_32;
+		struct msm_audio_g711_enc_config32 *enc_cfg;
+
+		enc_cfg = (struct msm_audio_g711_enc_config32 *)audio->enc_cfg;
+		cfg_32.sample_rate = enc_cfg->sample_rate;
+		if (copy_to_user((void *)arg, &cfg_32,
+			sizeof(cfg_32))) {
+			pr_err("%s: copy_to_user for AUDIO_GET_G711_ENC_CONFIG_32 failed\n",
+				__func__);
+			rc = -EFAULT;
+		}
+		break;
+	}
+	case AUDIO_SET_G711_ENC_CONFIG_32: {
+		struct msm_audio_g711_enc_config32 cfg_32;
+		struct msm_audio_g711_enc_config32 cfg;
+
+		if (copy_from_user(&cfg_32, (void *) arg,
+				sizeof(cfg_32))) {
+			pr_err("%s: copy_from_user for AUDIO_SET_G711_ENC_CONFIG_32 failed\n",
+				__func__);
+			rc = -EFAULT;
+			break;
+		}
+		cfg.sample_rate = cfg_32.sample_rate;
+		cmd = AUDIO_SET_G711_ENC_CONFIG;
+		rc = g711_in_ioctl_shared(file, cmd, (unsigned long)&cfg);
+		if (rc)
+			pr_err("%s:AUDIO_SET_G711_ENC_CONFIG failed. rc= %d\n",
+				__func__, rc);
+		break;
+	}
+	default:
+		pr_err("%s: Unknown ioctl cmd = %d", __func__, cmd);
+		rc = -ENOIOCTLCMD;
+	}
+	return rc;
+}
+#else
+#define g711_in_compat_ioctl NULL
+#endif
+
+static int g711_in_open(struct inode *inode, struct file *file)
+{
+	struct q6audio_in *audio = NULL;
+	struct msm_audio_g711_enc_config *enc_cfg;
+	int rc = 0;
+
+	audio = kzalloc(sizeof(struct q6audio_in), GFP_KERNEL);
+
+	if (audio == NULL)
+		return -ENOMEM;
+	/* Allocate memory for encoder config param */
+	audio->enc_cfg = kzalloc(sizeof(struct msm_audio_g711_enc_config),
+				GFP_KERNEL);
+	if (audio->enc_cfg == NULL) {
+		kfree(audio);
+		return -ENOMEM;
+	}
+	enc_cfg = audio->enc_cfg;
+
+	mutex_init(&audio->lock);
+	mutex_init(&audio->read_lock);
+	mutex_init(&audio->write_lock);
+	spin_lock_init(&audio->dsp_lock);
+	init_waitqueue_head(&audio->read_wait);
+	init_waitqueue_head(&audio->write_wait);
+
+	/*
+	 * Settings will be re-config at AUDIO_SET_CONFIG,
+	 * but at least we need to have initial config
+	 */
+	audio->str_cfg.buffer_size = FRAME_SIZE;
+	audio->str_cfg.buffer_count = FRAME_NUM;
+	audio->min_frame_size = 320;
+	audio->max_frames_per_buf = 10;
+	audio->pcm_cfg.buffer_size = PCM_BUF_SIZE;
+	audio->pcm_cfg.buffer_count = PCM_BUF_COUNT;
+	enc_cfg->sample_rate = 8000;
+	audio->pcm_cfg.channel_count = 1;
+	audio->pcm_cfg.sample_rate = 8000;
+	audio->buf_cfg.meta_info_enable = 0x01;
+	audio->buf_cfg.frames_per_buf = 0x01;
+	audio->event_abort = 0;
+
+	audio->ac = q6asm_audio_client_alloc((app_cb)q6asm_in_cb,
+				(void *)audio);
+
+	if (!audio->ac) {
+		kfree(audio->enc_cfg);
+		kfree(audio);
+		return -ENOMEM;
+	}
+
+	/* open g711 encoder in T/NT mode */
+	if ((file->f_mode & FMODE_WRITE) &&
+		(file->f_mode & FMODE_READ)) {
+		audio->feedback = NON_TUNNEL_MODE;
+		rc = q6asm_open_read_write(audio->ac, FORMAT_G711_ALAW_FS,
+					FORMAT_LINEAR_PCM);
+		if (rc < 0) {
+			pr_err("%s:session id %d: NT mode Open failed rc=%d\n",
+				__func__, audio->ac->session, rc);
+			rc = -ENODEV;
+			goto fail;
+		}
+	} else if (!(file->f_mode & FMODE_WRITE) &&
+				(file->f_mode & FMODE_READ)) {
+		audio->feedback = TUNNEL_MODE;
+		rc = q6asm_open_read(audio->ac, FORMAT_G711_ALAW_FS);
+		if (rc < 0) {
+			pr_err("%s:session id %d: T mode Open failed rc=%d\n",
+				__func__, audio->ac->session, rc);
+			rc = -ENODEV;
+			goto fail;
+		}
+		/* register for tx overflow (valid for tunnel mode only) */
+		rc = q6asm_reg_tx_overflow(audio->ac, 0x01);
+		if (rc < 0) {
+			pr_err("%s:session id %d: TX Overflow registration failed rc=%d\n",
+				__func__, audio->ac->session, rc);
+			rc = -ENODEV;
+			goto fail;
+		}
+	} else {
+		pr_err("%s:session id %d: Unexpected mode\n", __func__,
+				audio->ac->session);
+		rc = -EACCES;
+		goto fail;
+	}
+
+	audio->opened = 1;
+	audio->reset_event = false;
+	atomic_set(&audio->in_count, PCM_BUF_COUNT);
+	atomic_set(&audio->out_count, 0x00);
+	audio->enc_compat_ioctl = g711_in_compat_ioctl;
+	audio->enc_ioctl = g711_in_ioctl;
+	file->private_data = audio;
+
+	pr_info("%s:session id %d: success\n", __func__, audio->ac->session);
+	return 0;
+fail:
+	q6asm_audio_client_free(audio->ac);
+	kfree(audio->enc_cfg);
+	kfree(audio);
+	return rc;
+}
+
+static const struct file_operations audio_in_fops = {
+	.owner		= THIS_MODULE,
+	.open		= g711_in_open,
+	.release	= audio_in_release,
+	.read		= audio_in_read,
+	.write		= audio_in_write,
+	.unlocked_ioctl	= audio_in_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl   = audio_in_compat_ioctl,
+#endif
+};
+
+struct miscdevice audio_g711alaw_in_misc = {
+	.minor	= MISC_DYNAMIC_MINOR,
+	.name	= "msm_g711alaw_in",
+	.fops	= &audio_in_fops,
+};
+
+static int __init g711alaw_in_init(void)
+{
+	return misc_register(&audio_g711alaw_in_misc);
+}
+
+device_initcall(g711alaw_in_init);
diff --git a/drivers/misc/qcom/qdsp6v2/g711mlaw_in.c b/drivers/misc/qcom/qdsp6v2/g711mlaw_in.c
new file mode 100644
index 000000000000..bf9ca18eb401
--- /dev/null
+++ b/drivers/misc/qcom/qdsp6v2/g711mlaw_in.c
@@ -0,0 +1,384 @@
+/* Copyright (c) 2010-2016, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+*/
+
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/miscdevice.h>
+#include <linux/uaccess.h>
+#include <linux/sched.h>
+#include <linux/wait.h>
+#include <linux/dma-mapping.h>
+#include <linux/slab.h>
+#include <linux/msm_audio_g711.h>
+#include <linux/atomic.h>
+#include <linux/compat.h>
+#include <asm/ioctls.h>
+#include "audio_utils.h"
+
+#ifdef CONFIG_COMPAT
+#undef PROC_ADD
+#endif
+/* Buffer with meta*/
+#define PCM_BUF_SIZE		(4096 + sizeof(struct meta_in))
+
+/* Maximum 10 frames in buffer with meta */
+#define FRAME_SIZE		(1 + ((320+sizeof(struct meta_out_dsp)) * 10))
+static long g711_in_ioctl_shared(struct file *file,
+				unsigned int cmd, unsigned long arg)
+{
+	struct q6audio_in  *audio = file->private_data;
+	int rc = 0;
+	int cnt = 0;
+
+	switch (cmd) {
+	case AUDIO_START: {
+		struct msm_audio_g711_enc_config *enc_cfg;
+
+		enc_cfg = (struct msm_audio_g711_enc_config *)audio->enc_cfg;
+		pr_debug("%s:session id %d: default buf alloc[%d]\n", __func__,
+				audio->ac->session, audio->buf_alloc);
+		if (audio->enabled == 1) {
+			rc = 0;
+			break;
+		}
+		rc = audio_in_buf_alloc(audio);
+		if (rc < 0) {
+			pr_err("%s:session id %d: buffer allocation failed rc=%d\n",
+				__func__, audio->ac->session, rc);
+			break;
+		}
+		pr_debug("%s: sample rate %d", __func__, enc_cfg->sample_rate);
+		rc = q6asm_enc_cfg_blk_g711(audio->ac,
+			audio->buf_cfg.frames_per_buf,
+			enc_cfg->sample_rate);
+
+		if (rc < 0) {
+			pr_err("%s:session id %d: cmd g711 media format block failed rc=%d\n",
+					__func__, audio->ac->session, rc);
+			break;
+		}
+		if (audio->feedback == NON_TUNNEL_MODE) {
+			rc = q6asm_media_format_block_pcm(audio->ac,
+				audio->pcm_cfg.sample_rate,
+				audio->pcm_cfg.channel_count);
+
+			if (rc < 0) {
+				pr_err("%s:session id %d: media format block failed rc=%d\n",
+					__func__, audio->ac->session, rc);
+				break;
+			}
+		}
+		pr_debug("%s:session id %d: AUDIO_START enable[%d]\n", __func__,
+				audio->ac->session, audio->enabled);
+		rc = audio_in_enable(audio);
+		if (!rc) {
+			audio->enabled = 1;
+		} else {
+			audio->enabled = 0;
+			pr_err("%s:session id %d: Audio Start procedure failed rc=%d\n",
+					__func__, audio->ac->session, rc);
+			break;
+		}
+		while (cnt++ < audio->str_cfg.buffer_count)
+			q6asm_read(audio->ac); /* Push buffer to DSP */
+		rc = 0;
+		pr_debug("%s:session id %d: AUDIO_START success enable[%d]\n",
+				__func__, audio->ac->session, audio->enabled);
+		break;
+	}
+	case AUDIO_STOP: {
+		pr_debug("%s:session id %d: AUDIO_STOP\n", __func__,
+				audio->ac->session);
+		rc = audio_in_disable(audio);
+		if (rc  < 0) {
+			pr_err("%s:session id %d: Audio Stop procedure failed rc=%d\n",
+				__func__, audio->ac->session,
+					rc);
+			break;
+		}
+		break;
+	}
+	case AUDIO_SET_G711_ENC_CONFIG: {
+		struct msm_audio_g711_enc_config *cfg;
+		struct msm_audio_g711_enc_config *enc_cfg;
+
+		enc_cfg = (struct msm_audio_g711_enc_config *)audio->enc_cfg;
+
+		cfg = (struct msm_audio_g711_enc_config *)arg;
+		if (cfg == NULL) {
+			pr_err("%s: NULL config pointer\n", __func__);
+			rc = -EINVAL;
+			break;
+		}
+		if (cfg->sample_rate != 8000 &&
+			 cfg->sample_rate != 16000) {
+			pr_err("%s:session id %d: invalid sample rate\n",
+					__func__, audio->ac->session);
+			rc = -EINVAL;
+			break;
+		}
+		enc_cfg->sample_rate = cfg->sample_rate;
+		pr_debug("%s:session id %d: sample_rate= 0x%x",
+			__func__,
+			audio->ac->session, enc_cfg->sample_rate);
+		break;
+	}
+	default:
+		pr_err("%s: Unknown ioctl cmd = %d", __func__, cmd);
+		rc = -ENOIOCTLCMD;
+	}
+	return rc;
+}
+
+static long g711_in_ioctl(struct file *file,
+				unsigned int cmd, unsigned long arg)
+{
+	struct q6audio_in  *audio = file->private_data;
+	int rc = 0;
+
+	switch (cmd) {
+	case AUDIO_START:
+	case AUDIO_STOP: {
+		rc = g711_in_ioctl_shared(file, cmd, arg);
+		break;
+	}
+	case AUDIO_GET_G711_ENC_CONFIG: {
+		if (copy_to_user((void *)arg, audio->enc_cfg,
+			sizeof(struct msm_audio_g711_enc_config))) {
+			pr_err(
+				"%s: copy_to_user for AUDIO_GET_g711_ENC_CONFIG failed",
+				__func__);
+			rc = -EFAULT;
+		}
+		break;
+	}
+	case AUDIO_SET_G711_ENC_CONFIG: {
+		struct msm_audio_g711_enc_config cfg;
+
+		if (copy_from_user(&cfg, (void *) arg,
+				sizeof(cfg))) {
+			pr_err(
+				"%s: copy_from_user for AUDIO_GET_G711_ENC_CONFIG failed",
+				__func__);
+			rc = -EFAULT;
+			break;
+		}
+		rc = g711_in_ioctl_shared(file, cmd, (unsigned long)&cfg);
+		if (rc)
+			pr_err("%s:AUDIO_GET_G711_ENC_CONFIG failed. Rc= %d\n",
+				__func__, rc);
+		break;
+	}
+	default:
+		pr_err("%s: Unknown ioctl cmd = %d", __func__, cmd);
+		rc = -ENOIOCTLCMD;
+	}
+	return rc;
+}
+
+#ifdef CONFIG_COMPAT
+struct msm_audio_g711_enc_config32 {
+	uint32_t sample_rate;
+};
+
+enum {
+	AUDIO_SET_G711_ENC_CONFIG_32 = _IOW(AUDIO_IOCTL_MAGIC,
+	  (AUDIO_MAX_COMMON_IOCTL_NUM+0), struct msm_audio_g711_enc_config32),
+	AUDIO_GET_G711_ENC_CONFIG_32 = _IOR(AUDIO_IOCTL_MAGIC,
+	  (AUDIO_MAX_COMMON_IOCTL_NUM+1), struct msm_audio_g711_enc_config32)
+};
+
+static long g711_in_compat_ioctl(struct file *file,
+				unsigned int cmd, unsigned long arg)
+{
+	struct q6audio_in  *audio = file->private_data;
+	int rc = 0;
+
+	switch (cmd) {
+	case AUDIO_START:
+	case AUDIO_STOP: {
+		rc = g711_in_ioctl_shared(file, cmd, arg);
+		break;
+	}
+	case AUDIO_GET_G711_ENC_CONFIG_32: {
+		struct msm_audio_g711_enc_config32 cfg_32;
+		struct msm_audio_g711_enc_config32 *enc_cfg;
+
+		enc_cfg = (struct msm_audio_g711_enc_config32 *)audio->enc_cfg;
+		cfg_32.sample_rate = enc_cfg->sample_rate;
+		if (copy_to_user((void *)arg, &cfg_32,
+			sizeof(cfg_32))) {
+			pr_err("%s: copy_to_user for AUDIO_GET_G711_ENC_CONFIG_32 failed\n",
+				__func__);
+			rc = -EFAULT;
+		}
+		break;
+	}
+	case AUDIO_SET_G711_ENC_CONFIG_32: {
+		struct msm_audio_g711_enc_config32 cfg_32;
+		struct msm_audio_g711_enc_config32 cfg;
+
+		if (copy_from_user(&cfg_32, (void *) arg,
+				sizeof(cfg_32))) {
+			pr_err("%s: copy_from_user for AUDIO_SET_G711_ENC_CONFIG_32 failed\n",
+				__func__);
+			rc = -EFAULT;
+			break;
+		}
+		cfg.sample_rate = cfg_32.sample_rate;
+		cmd = AUDIO_SET_G711_ENC_CONFIG;
+		rc = g711_in_ioctl_shared(file, cmd, (unsigned long)&cfg);
+		if (rc)
+			pr_err("%s:AUDIO_SET_G711_ENC_CONFIG failed. rc= %d\n",
+				__func__, rc);
+		break;
+	}
+	default:
+		pr_err("%s: Unknown ioctl cmd = %d", __func__, cmd);
+		rc = -ENOIOCTLCMD;
+	}
+	return rc;
+}
+#else
+#define g711_in_compat_ioctl NULL
+#endif
+
+static int g711_in_open(struct inode *inode, struct file *file)
+{
+	struct q6audio_in *audio = NULL;
+	struct msm_audio_g711_enc_config *enc_cfg;
+	int rc = 0;
+
+	audio = kzalloc(sizeof(struct q6audio_in), GFP_KERNEL);
+
+	if (audio == NULL)
+		return -ENOMEM;
+	/* Allocate memory for encoder config param */
+	audio->enc_cfg = kzalloc(sizeof(struct msm_audio_g711_enc_config),
+				GFP_KERNEL);
+	if (audio->enc_cfg == NULL) {
+		kfree(audio);
+		return -ENOMEM;
+	}
+	enc_cfg = audio->enc_cfg;
+
+	mutex_init(&audio->lock);
+	mutex_init(&audio->read_lock);
+	mutex_init(&audio->write_lock);
+	spin_lock_init(&audio->dsp_lock);
+	init_waitqueue_head(&audio->read_wait);
+	init_waitqueue_head(&audio->write_wait);
+
+	/*
+	 * Settings will be re-config at AUDIO_SET_CONFIG,
+	 * but at least we need to have initial config
+	 */
+	audio->str_cfg.buffer_size = FRAME_SIZE;
+	audio->str_cfg.buffer_count = FRAME_NUM;
+	audio->min_frame_size = 320;
+	audio->max_frames_per_buf = 10;
+	audio->pcm_cfg.buffer_size = PCM_BUF_SIZE;
+	audio->pcm_cfg.buffer_count = PCM_BUF_COUNT;
+	enc_cfg->sample_rate = 8000;
+	audio->pcm_cfg.channel_count = 1;
+	audio->pcm_cfg.sample_rate = 8000;
+	audio->buf_cfg.meta_info_enable = 0x01;
+	audio->buf_cfg.frames_per_buf = 0x01;
+	audio->event_abort = 0;
+
+	audio->ac = q6asm_audio_client_alloc((app_cb)q6asm_in_cb,
+				(void *)audio);
+
+	if (!audio->ac) {
+		kfree(audio->enc_cfg);
+		kfree(audio);
+		return -ENOMEM;
+	}
+
+	/* open g711 encoder in T/NT mode */
+	if ((file->f_mode & FMODE_WRITE) &&
+		(file->f_mode & FMODE_READ)) {
+		audio->feedback = NON_TUNNEL_MODE;
+		rc = q6asm_open_read_write(audio->ac, FORMAT_G711_MLAW_FS,
+					FORMAT_LINEAR_PCM);
+		if (rc < 0) {
+			pr_err("%s:session id %d: NT mode Open failed rc=%d\n",
+				__func__, audio->ac->session, rc);
+			rc = -ENODEV;
+			goto fail;
+		}
+	} else if (!(file->f_mode & FMODE_WRITE) &&
+				(file->f_mode & FMODE_READ)) {
+		audio->feedback = TUNNEL_MODE;
+		rc = q6asm_open_read(audio->ac, FORMAT_G711_MLAW_FS);
+		if (rc < 0) {
+			pr_err("%s:session id %d: T mode Open failed rc=%d\n",
+				__func__, audio->ac->session, rc);
+			rc = -ENODEV;
+			goto fail;
+		}
+		/* register for tx overflow (valid for tunnel mode only) */
+		rc = q6asm_reg_tx_overflow(audio->ac, 0x01);
+		if (rc < 0) {
+			pr_err("%s:session id %d: TX Overflow registration failed rc=%d\n",
+				__func__, audio->ac->session, rc);
+			rc = -ENODEV;
+			goto fail;
+		}
+	} else {
+		pr_err("%s:session id %d: Unexpected mode\n", __func__,
+				audio->ac->session);
+		rc = -EACCES;
+		goto fail;
+	}
+
+	audio->opened = 1;
+	audio->reset_event = false;
+	atomic_set(&audio->in_count, PCM_BUF_COUNT);
+	atomic_set(&audio->out_count, 0x00);
+	audio->enc_compat_ioctl = g711_in_compat_ioctl;
+	audio->enc_ioctl = g711_in_ioctl;
+	file->private_data = audio;
+
+	pr_info("%s:session id %d: success\n", __func__, audio->ac->session);
+	return 0;
+fail:
+	q6asm_audio_client_free(audio->ac);
+	kfree(audio->enc_cfg);
+	kfree(audio);
+	return rc;
+}
+
+static const struct file_operations audio_in_fops = {
+	.owner		= THIS_MODULE,
+	.open		= g711_in_open,
+	.release	= audio_in_release,
+	.read		= audio_in_read,
+	.write		= audio_in_write,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl   = audio_in_compat_ioctl,
+#endif
+};
+
+struct miscdevice audio_g711mlaw_in_misc = {
+	.minor	= MISC_DYNAMIC_MINOR,
+	.name	= "msm_g711mlaw_in",
+	.fops	= &audio_in_fops,
+};
+
+static int __init g711mlaw_in_init(void)
+{
+	return misc_register(&audio_g711mlaw_in_misc);
+}
+
+device_initcall(g711mlaw_in_init);